Twisting-machine



(No Model.)

2 Sheets-Sheet 1. G. L. BROWNELL.

TWISTING MACHINE.

Patented Apr. 27, 1897.

n4: Nana's PETERS :0. mo'roumu. WASHINGYON, 04 c.

(No Model.) 2 Sheets-Sheet 2.

G. L. BROWNEL-L.

TWISTING MACHINE.

Patented Apfi. 27, 1897.

mmnllnlllam IIII.'IIIIIIII/ \umw )NAiHINGTON u r thvi rnn Status Parana" FFlCE.

TWISTING -MACHINE.

SPECIFICATION forming part of Letters Patent No. 581,672, dated April 27', 1897.

Application filed July 7,1894.

To (t/Z whom it HI/ILZ/ concern:

Be it known that I, GEORGE LOOMIS BROW- NELL, a citizen of the United States, residing at \Vorcester, in the county of Vorcester and State of Massachusetts, have invented a new and useful Improvement in Twisting-Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part of the same, and in which Figure 1 represents a side view of a twisting-machine embodying my invention, a portion of the framework having been removed in order to disclose the twisting mechanism. Fig. 2 is a side view of the twisting mechanism similar to that represented in Fig. 1, but on a larger scale, the upper portion shown in Fig. 3 being represented in central vertical sectional view. Fig. 3 is a central sectional view of the mechanism shown in Fig. 2, the section being taken on line 3 3, Fig. 2. Fig. 4 is a top view of the device for adjusting the tension of the driving-belt by which the twisting-spindle and stretching-drums are driven. Fig. 5 is a detached view of the pivoted arm and tightening-pulley for varying the tension of the twisting-belt. Fig. 6 is a front view of the adj ustableswinging arm upon which the roll of paper to be twisted is carried, and Fig. 7 is a top view of the compressor-stand K and compressor-pins K K Similar letters refer to similar parts in the different figures.

My invention relates to that class of twisting machines which is designed to twist a strip or ribbon of paper into a twine or cord, but that portion of the machine which is directly concerned in the operation of imparting a twist to the strip of paper is also adapted to and can be employed in machines for twisting a twine or cord composed of fibrous material, such as cotton, linen, &c.; and my invention consists in the construction and arrangement of parts as hereinafter set forth, and pointed out in the annexed claims.

Referring to the drawings, A denotes the framework of the machine, which supports a series of twisting mechanisms which are duplicates of each other and are arranged in parallel rows upon opposite sides of the machine. One of these twisting mechanisms is Serial No. 516,812. (No model.)

disclosed in Fig. 1 by the removal of a portion of the end framework of the machine upon the right-hand side of the figure.

J on rnaled in the framework is a horizontal d riving-shaft B, receiving rotary motion from a counter-shaft or a main line of shafting through a belt-pulley B and carrying scored pulleys having belt connections with the twisting mechanisms. One of these pulleys is shown at 13*, connected by a belt B with the scored pulleys C and C.

The scored pulley C is attached to a spindle C, formed in two sections-an upper hollow section 0 to which the scored pulley C is attached, and a lower section C The sections C and C have their axes in alinement and are connected by a framework consisting of the cross-bars C and 0 connected by the vertical bars C C.

The upper section O is journaled at its upper end in a horizontal rail A, and has its lower end attached to the cross-bar O.

The lower section 0 has its upper end attached to the cross-bar O and its lower end supported in a step-bearing A on the horizontal rail A so the upper and lower sections and intermediate framework will be rotated as a single piece by the rotation of the scored pulley O.

Rotating about the upper section C? of the spindle is a scored pulley 0, having a pinion D attached thereto, engaging the gears D D, which are attached to spindles D D journaled in the cross-bars C and C and carrying the scored stretching-drums D D so the rotation of the scored pulley C will rotate the stretching-drums D D independently of the spindle.

Depending from the under side of the crossbar 0 are two rods D D, having eyes D D at their lower ends and forming flier-arms, which are carried by the rotation of the spindle 0 about a winding-spool D held loosely on the lower section C of the spindle.

The arrangement of the stretching-drums outside their supporting-framework obviates the necessity of stringing the machine or carrying the cord through the frame in passing it around the stretching-drum or windingspool.

The spool D is supported upon a traversing rail E, which is attached to a sliding frame E, capable of a vertical sliding movement upon the fixed rods E by means of a traversing mechanism such as is now in use and consisting of a chain E attached to the sliding frame E and passing over a guide-roll Eflwith its opposite end attached to a drum E carried'upon a shaft E and alternately rotated in opposite directions by a mangle-wheel E driven in the usual manner by a pinion (not shown) carried upon a shaft E which is rotated by a pulley E", having a belt connection with the main driving-shaft B. The reciprocating motion of the drum E through the chain E imparts a rising-and-falling motion to the traversing rail E and winding spool D causing the twisted cord, as conducted through one of the eyes D 111 the flierarms, to be uniformly laid upon the windingspool.

A single driving-belt B is made to drive both pulleys O C by being carried from the pulley 13 around the scored pulley G, then around a tightening-pulley F, and from the tightening-pulley F around the scored pulley C, then back to the scored pulley B The tightening-pulley F turns loosely upon a stud F, held in a swinging arm F pivoted to a bracket F attached to the fixed framework of the machine.

Pivoted upon the upper end of the stud F is a flat bar F provided with a series of holes F arranged to be engaged by a pin F held in the frame of the machine. By disengaging the bar F from the pin F and pushing it inward the belt B will be tightened so as to operatively connect the pulleys O O with the driving-pulley B and by withdrawing the bar the belt B will be loosened and the pulleys C C disconnected from the drivingpower. By the tightening mechanism just described each of the twisting mechanisms can be independently connected with or disconnected from a common driving-shaft, allowing each of the twisting-spindles to be stopped when desired, and the tension of the driving-belt can also be accurately adjusted in order to maintain the proper speed of the spindle and stretchingdrums.

Mounted uponthe rail A is a supportingbracket G, having upper and lower arms G and G and from the arm G" a post G extends upwardly, supporting at its upper end two parallel wires G G forming a guide to conduct the paper strip or ribbon to the twisting mechanism.

The strip or ribbon of paper is wound in a coil (indicated by the broken line H) and is supported upon a stud H, projecting from one side of a swinging arm H loosely supported upon a rod H held by the framework of the machine and provided with fixed collars H H The arm H is provided upon one side with a stud H and upon the opposite side with a similar stud H.

In the operation of the machine the coil of paper II is placed upon the stud H and the arm H moved on the rod H against the fixed collar H thereby bringing the stud H and coil of paper H in alinement with the guidewires G A second coil of paper is placed upon the stud 11 upon the opposite side of the arm H and when the coil upon the stud H has been unwound the arm H is moved along upon the rod 1-1 against the collar H which brings the stud 1'1 and its coil of paper into alinement with the guide-wires G The two collars H and H are arranged upon the rod H in proper position to serve as stops for the arm H as it is moved along the rod and bring either of the studs H and H into alinement with the guide wires G so the shifting of the arm H" from one of the stops to the other will allow the substitution of one coil for another without stopping the machine. The upper arm G supports a removable tube 1, inclosing a cylindrical chamber I, extending nearly throughout its length and having at its lower end a contracted concentric opening or hole forming a die 1 Supported also by the arm G is a U-shaped wire J, having one end, J, removably held in the arm G- and the other end, J inclosed concentrically within the chamber 1, so as to form an ann ular space J around the end of the wire.

Supported upon the arm G is a vertical stand K, having a central hole K with its axis in alinement with the axis of the chamber 1 and also with the axis of the revolving spindle-section C Compressor-pins K K are held in ways at the upper end of the stand K, placed obliquely to the axis of the hole K, and having their upper ends beveled to form the surfaces K in each of which is a groove K, Fig. 7, so that when the surfaces K are brought together, as represented in Fig. 3, an opening will be formed through which the 1 cord passes into the hole K. The compressorpins K are held'from rotation in their ways by means of pins K which enter grooves K in the stand K. The lower ends of the compressor-pins K are supported upon a collar K capable of sliding vertically upon the stand K and resting upon one arm of a pivoted lever K which is provided with a sliding weight upon its opposite arm in order to raise the collar K and compressor-pins K K and bring their upper and beveled ends against the twisted cord.

Turning loosely upon studs held in the vertical bars C C are scored guide-rolls L L, so placed that their inner edges will be tangential to the axis 0 of the spindle and their lower edges tangential to the upper grooves in the scored stretching-drums D Between the scored pulley O and pinion D is a hub N, at the lower end of which a flange N is formed, having its edges N turned downward to inclose and protect the gears D D.

The journal-bearing in the rail A for the upper end of the section 0 of the spindle is elongated at its lower porti0n, as at 0, Fig. 2, in order to allow the spindle to be raised to clear the step-bearin g and permit the lower end of the spindle to be carried forward, so the spool D can be removed.

The strip of paperto be twisted is conducted from the coil H, between the guide-wires G, through the forming-tube I, the strip of paper being bent around the end J 2 of the wire J, so as to form a paper tube inclosed in the annular space J the periphery of the chamber I being preferably equal to the width of the paper strip, so as to nearly or quite bring the opposite edges of the paper strip together, forming a continuous paper tube around the interior surface of the chamber 1, the paper tube being held expanded by the inclosed end of the wire J.

From the chamber I the paper tube is conducted through the contracted hole 1 which causes the paper tube formed around J 2 to be collapsed or contracted in diameter by the formation of a series of longitudinal creases in the tube. The collapsed tube as it leaves the hole I passes through the groove K, formed in the beveled ends of the compressorpins K and through the hole K in the stand K and the hollow section 0 of the spindle. The cord is conducted from the hollow section C of the spindle around one of the guide pulleys L and around the several grooves in the stretching-drums D From the stretching-drums D the cord is carried over the edge of the lower cross-bar C and through one of the eyes D of the flier arms D to the winding-spool.

- The arm G2 is split diametrically with the hole containing the stand K by a slot M, and the stand K is held in the arm by means of a clamping-screw a. The stand K and sliding collar K are also cut open on one side by vertical slots M M forming a communication with the hole K. The slot M in the side of the stand K and the slot M in the sliding collar K are in alinement with the slot M in the arm G allowing the cord to be carried into the hole K from the side instead of requiring to be entered endwise through the hole K.

The operation of the machine is as follows: A rapid rotary motion is imparted to the revolving spindle C and flier-arms I) through the scored pulley O, imparting a twist to that section of the cord extending from the guidepulley L to the beveled ends K of the compressor-pins K the pressure of the compressor-pins I upon the cord limiting the twist to the section of the cord below the pins, the employment of the compressor-pins between the rotating twisting mechanism and the die I preventing the twist from extendin g upward and enteringthe die. During the twisting operation, as described, the stretching-drums D are rotated through the scored pulley O and intermediate gearing, causing the cord to be drawn from the coil H and de livered to the flier-arms D, the drag of the spool D upon the traversing-rail E causing the twisted cord to be wound upon the spool, the amount of twist which will be imparted to any given length of cord being determined, of course, by the relative speed of the stretching-drums D and the twisting-spindle O, the relative speed of the two being determined by the relative size of the scored drums C and O.

I do not herein claim the use of the tube 1, inclosing a wire and having an annular space between the wire and the interior wall of the tube; neither do I herein claim the employment of the contracted opening 1 forming a die, as these features were described and claimed in my pending application, Serial No. 399,095.

In the machine forming the subject of my present invention I employ a U-shaped wire J, having one end J removably held in the fixed framework of the machine and the opposite end J inclosed in the tube.

I do not herein claim, broadly, the employment of a compressor, as such has been in comm on use in twisting-machines for making cord or twine, but I deem it to be new in a twistingmachine adapted for forming a paper cord or twine from a paper strip or ribbon to arrange the several parts in the order I have describedviz., a coil-holder, upon which the paper strip or ribbon is supported, a rotating twisting mechanism, by which a twist is imparted to the cord and the cord is drawn from the holder and delivered to the winding-spool, with a tube, as I, and die, as I interposed between the twisting mechanism and the coil-holder and with the compressor interposed between the twistingmechanism and the die, by which the extent of twist along the cord is limited and prevented from entering the die, whereby I am able to complete the crimping of the paper tube before the same is twisted by the rotating twisting mechanism.

The British patent granted to me, No. 15,091, dated August 22, 1892, shows a tube, having a spindle inclosed therein, around which the paper ribbon was formed into a tube; but my present machine reverses the positions of the parts and allows the employment of the bent wire J, which is held in place by its own weight and is supported by one of its ends removably held in the arm G.

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In an organized machine, the combination of a coil-holder by which the material to be twisted is supported, a rotating twisting mechanism by which the material to be twisted is drawn from the coil-holder and twisted, a die 1 between said coil-holder and said twisting mechanism,and a compressor located between said die and said twistingmechanism, whereby the twisting action is limited and prevented from extending into said die, substantially as described.

2. In a twisting-machine, the combination with a rotating twisting mechanism, and a tube inclosing a chamber and having a contracted concentric opening, of a U-shaped IOC wire J, having one of itslegs entering the end of said tube and concentric thereto, and hav ing its other leg s'upportedby the frame of the machine, whereby said wire is supported in a different plane from the axis of said tube, substantially as described.

3. In a machine for twisting cord, the combination of a fixed arm supporting a hollow compressor-stand and provided with a slot on one side, a hollow compressor-stand supported by said arm and having a slot coinciding with the slot in said arm and communicating with the interior of said stand and a pair of compressor-pins held by said slotted stand and arranged to bear against the cord, substantially as described.

4. The combination of the hollow spindlesection 0 cross-bar 0 attached to said spindle-section, the spindle-section C cross-bar 0 attached to said spindle-section, a vertical bar O uniting said cross-bars, and stretchingdrums journaled in said cross-bars outside said vertical bar G, whereby the cord can be carried around said stretching-drums, substantially as described.

' '5. The combination of the spindle-sections C and O framework uniting said spindlesections, consisting of the cross-bars C C and vertical bars 0 stretching mechanism carried by said framework, a spool-support concentric with said spindle-section O flierarms attached to the cross-bar O and projecting downward, eyes in the free ends of said flier-arms, and means for raising and lowering said spool-support, substantially as described.

6. In a twisting-machine, the combination of pulley O and a twisting mechanism connected with said pulley, a pulley C and stretching mechanism connected with said pulley C, a driving-pulley having abelt connection with said pulleys O and O, a tightening-pulley, a pivoted arm supporting said tightening-pulley, a belt connecting the driving-pulley, the pulleys O and O and the tightening-pulley, a shipper-bar E connected with said pivoted arm and provided with a series of holes F and a pin F held by the framework of the machine and engaging one of said holes, substantially as described.

Dated this 2d day of July, 1894.

GEORGE L. BROWNELL.

WVitnesses:

RUFUs B. FOWLER, HENRY W. FOWLER. 

